Model: 2579A

Hexagon Castellated Plain Nut

Special Features:

0.031 in. Radius notch on all corners 0.375 in. Above bearing surface

Properties:

Thread Class

Thread Direction

Right-hand

Counterbore Diameter

0.631 inches nut and 0.651 inches nut

Nut Style

Castellated, hexagon

Nut Height

Between 0.834 inches and 0.854 inches

Width Across Flats

Between 0.928 inches and 0.948 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

0.625 inches

Bearing Surface Type

Washer faced

Material

Steel comp 1144

Material Specification

Sae assn standard single material response

NSN

5310-00-275-6747

Part Number

2579A

Description

Nut,plain,castellated,hexagon

CAGE

11083

A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, slotted, hexagon.

Part 2579A NSN 5310-00-275-6747

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01854

FIIG:

A021A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

50.0

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318160000
SITC: 69421
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Nuts of iron or steel